Comment 0 for bug 2043942

On a laptop with a HDMI screen plugged (using same image on all monitors):
It seems that after power management feature kicks in (in my case a blank screen) and actions are resumed that the original (laptop) screen remains with a full light grey and is unusable.

Recreation steps:
1. plug in a hdmi monitor into the hdmi plug of your laptop;
2. while the laptop remains charged+plugged in the wall watch something with celluloid then resume in 2+ hours;
3. on external screen: full working desktop with mouse cursor and colors;
on laptop screen: full light grey screen, no life

nb: by totally unplugging (power and hdmi cable) the laptop it screen remains unusable but TTY1-6 will work.
By replugging both cables the desktop will again show on the external screen but laptop screen will remain unusable.

ProblemType: Bug
DistroRelease: Ubuntu 23.10
Package: xorg 1:7.7+23ubuntu2
ProcVersionSignature: Ubuntu 6.5.0-10.10-generic 6.5.3
Uname: Linux 6.5.0-10-generic x86_64
ApportVersion: 2.27.0-0ubuntu5
Architecture: amd64
CasperMD5CheckMismatches: ./casper/filesystem.squashfs
CasperMD5CheckResult: fail
CompositorRunning: None
CurrentDesktop: MATE
Date: Sun Nov 19 15:45:00 2023
DistUpgraded: 2023-10-12 22:24:13,551 DEBUG Running PostInstallScript: '/usr/lib/ubuntu-advantage/upgrade_lts_contract.py'
DistroCodename: mantic
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes
GraphicsCard:
 Advanced Micro Devices, Inc. [AMD/ATI] Picasso/Raven 2 [Radeon Vega Series / Radeon Vega Mobile Series] [1002:15d8] (rev df) (prog-if 00 [VGA controller])
   Subsystem: Hewlett-Packard Company Picasso/Raven 2 [Radeon Vega Series / Radeon Vega Mobile Series] [103c:87b7]
InstallationDate: Installed on 2023-02-23 (270 days ago)
InstallationMedia: Ubuntu-MATE 22.10 "Kinetic Kudu" - Release amd64 (20221018)
MachineType: {report['dmi.sys.vendor']} {report['dmi.product.name']}
ProcEnviron:
 LANG=en_CA.UTF-8
 LANGUAGE=en_CA:en
 PATH=(custom, no user)
 SHELL=/bin/bash
 TERM=xterm-256color
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.5.0-10-generic root=UUID=3e40054f-c010-4c20-834b-badb6d17cf88 ro splash splash vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: Upgraded to mantic on 2023-10-13 (38 days ago)
dmi.bios.date: 12/29/2022
dmi.bios.release: 15.67
dmi.bios.vendor: AMI
dmi.bios.version: F.67
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 87B7
dmi.board.vendor: HP
dmi.board.version: 28.21
dmi.chassis.type: 10
dmi.chassis.vendor: HP
dmi.chassis.version: Chassis Version
dmi.ec.firmware.release: 28.21
dmi.modalias: dmi:bvnAMI:bvrF.67:bd12/29/2022:br15.67:efr28.21:svnHP:pnHPLaptop14-fq0xxx:pvr:rvnHP:rn87B7:rvr28.21:cvnHP:ct10:cvrChassisVersion:sku10M11UA#ABL:
dmi.product.family: 103C_5335KV HP Notebook
dmi.product.name: HP Laptop 14-fq0xxx
dmi.product.sku: 10M11UA#ABL
dmi.sys.vendor: HP
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.115-1
version.libgl1-mesa-dri: libgl1-mesa-dri 23.2.1-1ubuntu3
version.libgl1-mesa-glx: libgl1-mesa-glx N/A
version.xserver-xorg-core: xserver-xorg-core 2:21.1.7-3ubuntu2.1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-3
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20210115-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.17-2build1